CVE-2022-35741Network attack vector

File disclosure and SSRF via SAML entity expansion

Published Jul 18, 2022 · Updated Aug 3, 2024

XXE in Apache CloudStack 4.5.0 through 4.16.1.0 and 4.17.0.0 allows remote attackers to read management-server files. The enabled SAML 2.0 Service Provider plugin passes attacker-controlled authentication XML to parsers that permit external entity resolution. The plugin is disabled by default; when enabled, entity resolution permits file reads, server-side requests, and management-server denial of service.

CVSS severity9.8
Critical
EPSS probability8.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in Apache CloudStack 4.5.0 through 4.16.1.0 and 4.17.0.0 allows remote attackers to read management-server files. The enabled SAML 2.0 Service Provider plugin passes attacker-controlled authentication XML to parsers that permit external entity resolution. The plugin is disabled by default; when enabled, entity resolution permits file reads, server-side requests, and management-server denial of service.

The record

CVE
CVE-2022-35741
Published
Jul 18, 2022
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache CloudStack
Classifications
CWE-611, CAPEC-221, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.5.0 <Apache CloudStack*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache CloudStackversion=4.5.0 <Apache CloudStack*

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
CAPEC-221Data Serialization External Entities Blowup
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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